Support for tube frames



April 9, 1935. E. .1. DACEY 1,997,047

SUPPORT FOR TUBE FRAMES Filed Jan. 29, 1934 snuentor 6: dwau'd J. DaceQ. tornegs Patented Apr. 9, 1935 r I 7 UNITED.- STATES PATENT OFFICE ISUPPORT F012. TUBE FRAMES Edward J. Dacey, Philadelphia, Pa., assignorto Crornpton & Knowles Loom Works, Worcester, Mass, a corporation ofMassachusetts Application January 29, 1934, Serial No. 708,872

:10 Claims. (Cl. 1397) This invention relates to improvements inAxminster loom having a frame I!) and a cam looms for weaving relativelywide Axminster shaft. Hon which is mounted a cam plate I2. fabrics,particularly those having the pattern A cam l3 on the plate coacts witha lever l4 occurring on the back. pivoted as at IE to a fixed part ofthe loom- A 5 p In looms ofthis type tubeframes arepresented. spring l6holds .the lever innormal position to be 5 v one at a time to tuftforming position. The yarn engaged by the cam and a stop screw ll limitstubes which. project from the frames extend movement of the lever.

through thebinder warps and are moved from Extending upwardly from theleveris a rod '|8 a rearwardly inclined to a substantially verticalconnected to a lifter lever l9 pivoted on stud 20 position during thewiping-in operation of the carried by a stand 2| secured to the arch 22.vAn 10 tube frame. The tubes may also engage fyarn advancing lever 23and a lifter arm 24 are also spacing plates when the loom is equippedto'weave pivoted on the stud .20. A lifter pin25 vertia fabric whereinthe pattern appears on the back. cally adjustable on the lifter lever I9is positioned In such an instance the friction between the tubes toengage the under side of the arm 24' to elevate and plates is likely toproduce a rearward bendthe latter. A link 26 connects the arm 24 and a15 ing of the tube frame the effectof which is to second link 21 pivotedat 28to the lower part of the produce a defective row of tufts. advancerlever 23. A brace 29 is secured to" the In very wide Axminster looms itis customary lower link 21 and may be of the general form to use a tubeframe carrier extending across the shown in Fig. 1.: A spring 3|!surrounds arod 3| loom to prevent sagging of the tube frame during whichpasses through lug 32 on lever |9 and a 20 the pulling-01f operation.The carrier lies in stop 33 on lever 23 which is held normally against;front ofthe back knife frame and its horizontal the lever I9 by thespring; Adjustable nuts 34 dimensions in cross section are not enough toon the rod 3| receive the thrust of the spring. prevent all of therearward bowing incident to In the operation of the parts thus fardescribed the wiping-in. the cam l3 will depress rod 8 and thuslower 25It is an important object of my present inventhe left end of lever l9 asviewed in Fig.1. This 'tion' toprovide a form of brace to be used'ineffects a compression of spring 3|! which acts connection with thecarrier for the purpose of through rod 3| torock the advancer lever 23and preventing the latter and also the tube frame move link 2'!forwardly yieldingly. The pin 25 from bending rearwardly during thefirst part engages and raises the arm 24, the latter causing 30 of thetuft forming operation. This result I may link 26 to lift the brace 29.The latter'is thereachieve by using a brace which is presented to thefore given a forward and upward movement and carrier at the proper pointin the cycle of the. the de e and me O ese v meh s n b loom andeffectiveto follow the carrier during controlled by the cam I3. The cammay have an 7 35 the Wiping-in operation of the tube frame. initial rise35 leading to a slower rise '35 which 35 With these and other objects inview which will terminates i a Second p I'iSB A dwell' appear as thedescription proceeds, my invention 8 ay be e p d 110 1 1- t brace duringh resides in the combination and arrangement of latter pa t f t ft f n pra i parts hereinafter described and set forth in the A small bracket 40on arch 22 is slotted as at 40 claims. 4| to afford adjustable supportfor a roll 42. The 40 In the accompanying drawing, wherein a, latterenters a notch 43 in'the bottom of. link 27. venient embodiment of myinvention is set forth, Th -matt r thus far d s rib d may be s m ar tFig. 1 is a side elevation, parts beingin section, t at s wn in my 0 -pap a Serial of the upper part of an Axminster loom'having 45 myinvention applied theret Extending across the loom is a carrierbar 45 45Fig. 2 is an enlarged transverse section through which y be formed offront d b ect ons the tubeframe and carrier, 46 and 41, respectively.These sections may be Fig, 3 is a view imil r t portion of Fig 1, b tsecured together at points throughout their length with the successivepositions of the carrier and d y have forwardly projecting from t p tstube frame indicated'diagrammaticadly, thereof a foot or holder 48 onwhich rests the 50 Fig. 4 is a top plan view on an enlarged scale bar 49of a tube frame T. As shown herein the looking in the direction of arrow4, Fig. 1, and Section a hav a downw rdly and forwardly Fig. 5 is afragmentaryrear elevation looking inclined part 50, while the, rearsection Almay in the direction of arrow 5,, Fig. 2. have a similarsection 5| behind and spaced from Referring to the drawing, I have shownan the part 50. i 55 Fig. 4 shows means for supporting one end of thecarrier bar, but it is to be understood that the other end of the loomhas a similar mecha nism. A tube frame unhooking bolt 60 is slidable ina movable bearing 6| by means of an arm 62 and is themeans by which thetube frame can be unhooked'from the usual transporting chain notlshown.This slidingbar 60 takes the place of the ordinary clutch and performscertain functions of the latter; As shown in Fig. 1 arms 63 are movableabout an axis 64 fixed about the loom by means of a lifter rod 65, andthese arms support the carrier and thebeari-ngs :51. The rods 65 raiseand lowerithearms63 and there fore the carrier for eachfltuft forming.cycle'gof The carrier bar together with the operations. mechanism whichoperates may if desired operate substantially as set forth in patent toRobertson No.1,604,318. V v

As shown in Fig. 1 the reed R cooperates with spacer plates 'P whichlie. under a cloth board B having hooks The hooks assist=in the.formationof the .tuft resulting from the bending of the .yarn Yprojectedsfrom :the tube frameiduring. the weaving .operation I andithev tubes 10 extending downwardly from the tube frame are wiped inthrough the upper. and lower binders 'B' and B", respectively, (and-move.forwardly.,between thepIatesP.

.Themanner. of operating the tube frame mayshowninsdotanddashlines,.israised toa point above the hooks ,so that the yarn .can be cut byinstrumentalities: not shown herein and where the yarn. together withthe shots-"of :fillingnot shown herein canbe'moved over therzhoolrs vtoform the tufts bymeansof the reed-R. The plates Pmove forwardlytoaccommodate theadvancing movement ofthe reed and maybe if ,desiredinalignment with the reed to provide guide; aisles for the yarnY. V

' The particular mechanism-shown herein -fo assistinginthe formation ofthe 'fabricvhaving the pattern. shown on the back, that is, the plate Pand hooks-3H, may be wrelatedzand operated, as shown in co-pendinapplication filed .byfiobentson andsmyself, Serial No. 575,190. "Itis.-.suffi0.ient for the purpose of :themresentanillication to statefithat the plates P offer frictional resistance :to the yarn tubes :10with theresultthat theltubezframe and the carrier tend tob0wrearwardly;-or tothe wieft as viewed in :Fig. 3, due to the wiping-inoperation of. the tubeaframep In my aforesaid application Serial No.696,261

I have shown mechanism fordirect engagement withrthe tube frame toprevent this bowing; ibut :in very wide looms the sagging of the tubeframe due to its weight can best-:bercorrected'by the :use ofthecarrierbar 45 asset ;.f;orth hereinand }my present invention relatesto means for bracing this bar. I v

'In carrying mypresent invention into effect I remove a part of the rearwall5l of the-back-secsection 46. The angle section, which has ahorizontal part 82 and a vertical part 83, is adapted for engagementwith the forwardlyjextending finger 84 of the brace 29. Thisfingerislong enough to extend through the window and mm engagement withthe vertical wall 83 during the wipingin operation so that as the tubeframe moves towardithevertical position shownin dotted lines in Fig. 3the finger will ,bein engagement with the angle section and force thesame forwardlyl The effect of this is to overcome any tendency to bendthe carrier which may be transmitted :throu gh.the-llatter and the. yarntubes by fric .tional gen agementnwith the platesP.

Thelevenlflll'drivenbyrod I0 I operates thrust rod ll l connected to thecarrier support I03 to give the carrier and the tube frame it holds thedesired wiping-in -motions, substantially in the usual .mann; er.

After the wiping-in operation has been com-Y function 1maybezomittedifflt is found :that the as carrierb'ar is sufliciently strongto resistsagging of the tube frame due togravlty. i To this extent itshould be noted i that 'the part'played by :the' pin attendingto-raise-the armllis not anessential partof' the present invention andmayibemdispensedzwith-shouldthe carrier barbe "adequatelto overcome. theeffects of gravity on the barrM;

Where .a single ibracezflis used, .the coacting bracket 58;! will be'near the centerof the'tube frame, :butI do not wish to'rbejlimitedto. a-single brace. The roll 42 assists in causing :the sflnger 84 tomaintain bracing relation *withthefbracket '81 duringthewipingeinoperation. .A tongue 90 on theicarrier, see Fig.2,-entersa-loop9l on :the tubeframe to :hold .the latter from falling.:forwlardlyp mpening n in :thelcarrier receives :the loopas the:tube'frame :moves. down on theicarrier.

From the foregoing :it willbe seen that :Ilhave provided. :means -forpreventing :b'ackward lbOWiXIg of the tube frames on very wide Axminsterlooms, the-mechanism accomplishing this result including a; known :formof carrier, bar which is :modified so'that it canreceiveaforwardthrustduring 4 i-the-wipingl-in operation to preventbowing'ofithe tube frame. While the angle-section kon-thecarrier bar has;been shown ,as a :separate :piece, yet

:I am, notlimitedtothis construction, :inasmuch .as-ariy urfa 'psitionedtocQntaQt with the:fl.n-

gory and carried by thecarrierzbar will carry out the spirit of-theinvention. Bythegarrangea ment-set forth hereinthe tube 'frame's can bekept in their, standard form and the carrier bar alone modified toprevent rbackwardbending. Further more, by having the angle .seotionaonthe forward wallof the section 46 the section is entirely inhereindisclosed, but whatI claimis:

1. In an Axm inster 400m, av tubeifran'ie from which project yarn tubes,a carrier; extending across the loom and supporting .thetubeiramethroughout substantially the whole length thereof,

means to give the carrier and tube frame wipingin movements, yarnguiding plates between which the yarn tubes pass during the wiping-inoperation, the guide plates engaging the tubes and thereby tending tobend the carrier and tube frame rearwardly, and means to preventrearward bending of the carrier and tube frame.

2. In a pile fabric loom, a tube frame having yarn tubes, a set of guidedevices through which the yarn tubes pass and which engage the tubes andthereby tend to bend the tube frame rearwardly, a carrier extendingacross the loom and supporting the tube frame, and a brace to enter thecarrier to engage a rearwardly facing surface and prevent the carrierand tube frame from bending rearwardly under influence of the guidedevices.

3. In a pile fabric loom, a tube frame having yarn tubes, a set of guidedevices through which the yarn tubes pass and which tend to bend thetube frame rearwardly, a carrier extending across the loom andsupporting the tube frame, said carrier being formed of front and backsections, and a brace to transmit a force to the front section tendingto prevent rearward bending of the tube frame and carrier underinfluence of the guide devices.

4. In a pile fabric loom, a tube frame having yarn tubes, a set of guidedevices through which the yarn tubes pass and which tend to bend thetube frame rearwardly, a carrier extending across the loom andsupporting the tube frame, means on the carrier defining a rearwardly,and also a downwardly facing surface, and a brace positioned forengagement with the rearwardly facing surfaces and tending to preventrearward bending of the tube frame and carrier and also effective toengage the downwardly facing surface to prevent sagging of the carrierunder action of gravity.

5. In an Axminster loom, a tube frame, a set of guide devices throughwhich the yarn tubes pass which tend to bend the tube frame rearwardly,a carrier extending across the loom to support the tube frame andmovable to give the tube frame wiping-in movements, and brace means toengage and followthe carrier and. prevent rearward bending of thecarrier and tube frame during the wiping-in movements.

6. In a pile fabric loom, a tube frame having yarn tubes, a set of guidedevices through which the yarn tubes pass and which tend to bend thetube frame rearwardly, a carrier extending across the loom andsupporting the tube frame, means yarntubes, a'set of guide devicesthrough which the yarn tubes pass and which tend to bend the tube framerearwardly, a carrier extending across the loom'and supporting the tubeframe, means defining interconnections between the carrier and the tubeframe to prevent movement of the tube 7 frame forwardly with respect tothe carrier, said carrier having provision for engaging the tube frameand preventing rearward bowing of the said frame, and means to preventrearward bowing of the carrier to thereby prevent rearward bending ofthe tube frame. I

8. In a pile fabric loom, a tube frame having yarn tubes, a set of guidedevices through which the yarn tubes pass and which tend to bend thetube frame rearwardly, a carrier extending across the loom andsupporting the tube frame, a tongue on said carrier, a strap on the tubeframe which the tongue enters to prevent the tube frame from movingforwardly with respect to the carrier, the

latter having provision for preventing rearward bending of the tubeframe, and means to engage the carrier and prevent rearward bendingthereof. 9. In an Axminster loom, a tube frame, a set of guide devicesthrough which the yarn tubes pass which tend to bend the tube framerearwardly a carrier extending across the loom and supporting the tubeframe throughout the length thereof, means to give the carrier and thetube frame carried thereby wiping-in movements, and means movablerelatively to the carrier during the wiping-in movements to engage thecarrier and prevent the latter and tube frame from bending rearwardlyduring said wiping-in movements.

10. In an Axminster loom, a tube frame, a set of guide devices throughwhich the yarn tubes pass which tend to bend the tube frame rearwardly,a carrier extending across the loom and supporting the tube framethroughout the length thereof, means to give the carrier and the tubeframe carried thereby wiping-in movements, and means separate from thecarrier and movable relatively thereto during the wiping-in movements toengage the carrier and. prevent the latter and tube frame from bendingrearwardly during said wiping-in movements.

EDWARD J. DACEY.

